http://www.goldbulletin.org/assets/file/goldbulletin/downloads/Papazian_3_15.pdf
I know that this excellent article has been posted before but, every so often, the subject of the value of the gold used to decorate glassware, ceramic, etc., comes up. On page 85, it gives a fairly definitive answer as to the thickness of the gold (22K) film. The thickness is 125nm, or 5 millionths of an inch thick. At a $1300 gold market, one sq.in. of gold at this thickness is worth about 6 cents. The article also mentions that, if the gold is applied too thick, it will blister during the firing. The article was written by Englehard. Their product, Hanovia Liquid Gold, is used on most all of this type material.
I know that this excellent article has been posted before but, every so often, the subject of the value of the gold used to decorate glassware, ceramic, etc., comes up. On page 85, it gives a fairly definitive answer as to the thickness of the gold (22K) film. The thickness is 125nm, or 5 millionths of an inch thick. At a $1300 gold market, one sq.in. of gold at this thickness is worth about 6 cents. The article also mentions that, if the gold is applied too thick, it will blister during the firing. The article was written by Englehard. Their product, Hanovia Liquid Gold, is used on most all of this type material.